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1190 results found

Visual performance of new multifocal IOL

Multifocal IOLs (MIOLs) keep evolving to try and get the best outcome in terms of vision and reduction of side-effects. This prospective interventional study was carried out on 34 eyes of 17 patients (11 women (65%) and six men (35%))...

VA and stereo changes with increasing Bangerter filters

This study investigated the effect of monocular blur induced by Bangerter filters (BF) on both monocular and binocular visual acuity (VA) and stereoacuity in normal visual systems. Subjects included 24 healthy student volunteers aged 20.33 ±1.79 years; 22 female. One...

Iranian prevalence of convergence / accommodative disorders

The aim of this study was to investigate the frequency of accommodative and convergence disorders in an optometric clinical population and ascertain tests with the highest sensitivity and specificity in detecting these anomalies. The authors gathered information on symptoms, near...

Assessment of slow and fast vergence in stroke survivors

The authors present the findings of a prospective cohort study. Three hundred and five stroke survivors were recruited consecutively. The following exclusion criteria were applied; aphasia, cognitive impairment, visual inattention, ocular motor nerve palsy and neuromuscular disease. Fifty age-matched controls...

Smartphone use and its effects on eyes

Longitudinal pilot study on 12 young healthy adults comparing effects of smartphone use over a 60-minute period. Reading conditions and smartphone use was standardised for all participants. Ocular symptoms, tear function and binocular vision were assessed before and after each...

Pilot trial of virtual reality to treat amblyopia beyond the age of seven years

A pilot double-blind randomised controlled trial is presented. Patients were required to be between seven and 38 years of age, have a diagnosis of anisometropic and / or strabismus unilateral amblyopia, visual acuity in the amblyopic eye between 0.3-1.0 LogMAR...

Head-mounted display impact

This study investigated the clinical effects of the head-mounted display on the normal eye to obtain reliable safety data in adolescents. The study included 60 volunteers aged on average 14.7 ±1.3 years (13-18) of which 59% were female. Mean best...

GP contact lenses in nystagmus

The purpose of this study was to quantify and evaluate the effect of rigid gas permeable contact lenses (CLs) on visual acuity, contrast sensitivity and motor parameters of involuntary eye movements in hyperopic patients with infantile nystagmus syndrome (INS). This...

Using video-oculography to record monocular eye movements

The aim of this study was to examine the characteristics of monocular eye movements recorded using video-oculography (VOG). VOG monocular recording has become increasingly popular in comparison to electro-oculographic binocular recording, due to its simple technique. The authors evaluated the...

Unexplained vision loss following exposure to combat

Non-organic vision loss (NOVL) is defined as a decrease in visual acuity or visual field without an identifiable organic cause. NOVL can be particularly challenging and time-consuming to diagnose, especially where the vision loss is superimposed on an element of...

Saccades and contrast sensitivity in retinoblastoma survivors

The authors report a cross-sectional study, which recruited children aged 5 to 18 years old who completed treatment completion for retinoblastoma more than six months ago. Exclusion criteria included bilateral enucleation and pre-existing conditions associated with cognitive impairment. A total...

BV after long-standing exotropia

Pre and postoperative binocular vision (BV) was compared in long-standing large angle exo deviations. The purpose was to determine the BV potential in these cases and particularly for those at risk of postoperative paradoxical diplopia. In this retrospective study patients...